A functional film of the invention includes a microparticulate-containing layer containing functional microparticulates. The exo-skeleton may assume contracted and enlarged conditions, and includes one or more serpentine elements, each extending both peripherally and axially along at least a portion of the peripheral wall. The outlet of the heat exchanger is connected downstream of the outlet of the valve. A P+-type buried layer is formed abutting on a bottom of each of the well regions, an N+-type buried layer is formed abutting on a bottom of the P+-type buried layer, and a transistor for charge transfer is formed in each of the P-type well regions. In addition, the VBR is increased over consecutive time intervals until a maximum video bit rate is restored, if the PL over each consecutive time interval is less than or equal to the packet loss threshold.